4521004821 has 32 divisors (see below), whose sum is σ = 7151569920. Its totient is φ = 2815897392.

The previous prime is 4521004757. The next prime is 4521004841. The reversal of 4521004821 is 1284001254.

It is not a de Polignac number, because 4521004821 - 2⁶ = 4521004757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521004841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57951 + ... + 111356.

It is an arithmetic number, because the mean of its divisors is an integer number (223486560).

Almost surely, 2^4521004821 is an apocalyptic number.

It is an amenable number.

4521004821 is a deficient number, since it is larger than the sum of its proper divisors (2630565099).

4521004821 is a wasteful number, since it uses less digits than its factorization.

4521004821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169382 (or 169376 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 4521004821 is about 67238.4177461070. The cubic root of 4521004821 is about 1653.5283932362.

The spelling of 4521004821 in words is "four billion, five hundred twenty-one million, four thousand, eight hundred twenty-one".